Abstract: A game having a supporting frame over which is draped a cover and a netting with the cover and netting catching and retaining arrows shot into the target or cover. The target may be designed to replicate a dart board.

Abstract: A database management systems is disclosed for solving distributed queries across a range of resources. In known systems, database retrieval from multiple sources suffers from problems of reconciliation of data between resources and resource or data incompatibility. The invention allows full database integration even in the case where a database includes a plurality of disparate database resources having differing ontologies (data structures). The system has an ontology server which is used to store the ontologies of various database resources and the query engine is designed to consult the server so that it can construct a query that will operate effectively across the disparate database resources.

Abstract: A database management systems is disclosed for solving distributed queries across a range of resources. In known systems, database retrieval from multiple sources suffers from problems of reconciliation of data between resources and resource or data incompatibility. The invention allows full database integration even in the case where a database includes a plurality of disparate database resources having differing ontologies (data structures). The system has a complex query analysis system that is arranged to find and link all database resources having the required elements for a specific database query. This then enables the query to be processed more efficiently.